Blow-out valve



Feb. 19, 1924. 1,483,943

' G. w. KELLER ed May 4, 1925 v Patented Feb. 19, 1924.-

UNITED STATES GEO R-GE WILLIAM KELLER, OF PORTSMOUTH, OHIO.

BLOW-OUT VALVE.

Application filed May 4,

To all whom it may concern:

Be it known that I, Gnonen W. KELLER, a citizen of the United States, residing at Portsmouth, in the county of Scioto and State of Ohio, have invented a new and useful Blow-Out Valve, of which the following is a specification.

This invention relates to blow out valves especially designed for use in blowing out steam boilers or the like, to remove foreign matter from the boiler.

The primary object of the invention is to provide a blow out valve of a construction to prevent foreign matter from finding its way under the valve seat to restrict movement of the valve and render the same inoperative.

Another object of the invention is the provision of a valve having a plurality of jets of steam to the boiler, to insure the steam contacting with the entire surface of the crown sheet.

A further object of the invention is to provide a blow out valve wherein the steam pressure will be restricted in its passage through the blow out valve to increase the pressure of the steam, at its point of dis charge from the valve I l/Vith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of What is claimed, without departing from the spirit of the invention.

Referring to the drawing:

The figure is a longitudinal sectional view through a blow out valve constructed in accordance with the invention.

Referring to the drawing in detail, the body of the valve is indicated by the reference character 5 and includes a valve seat 6 disposed at the head of the .chamber 7.

The valve body is formed with a threaded extension 8 adapted to be positioned in a suitable threaded openin of a boiler so that the steam passing through the body portion will not act to force the valve from the boiler Forming a part of the valve body is an extension 9 which is formed with internal threads 10, whereby a hose or other 1923. Serial No. 636,604.

suitable steam conveying pipe may be connected to the body 5.

As shown, the movable valve member, is cylindrical in formation and provided with a plurality of openings 11 adjacent to one end thereof, openings 12 being formed in the wall of the valve at the opposite end thereof, while the openings 13 are formed in the extreme end of the valve so that when steam is passing through the valve, it will pass from the valve in the form of jets to contact with the entire surface of the boiler being cleaned.

Cooperating with the valve seat 6 is a valve 14 that may be moved to shut off the passage of steam through the valve body and moved to various positions with respect to the valve seat 6 to regulate the quantity of steam passing through the valve body. Carried by the valve proper is a valve stem 15 that extends through an opening in one end of the valve body and is provided with an opening to accommodate the head 16 of the valve operating arm 17 which is pivotally supported at 18 to the valve body. A rod 19 has connection with the outer end of'the arm 17 so that the arm may be readily actuated to move the valve proper. From the foregoing it will be seen that when the arm 17 has been moved to unseat the valve member 14, steam will pass into the chamber 7 through the openings 11 and discharged through the openings .12 and 13 at the opposite end of the valve body.

Having thus described the invention, what is claimed as new is:

1. In a valve, a body portion having a threaded'extension and having a valve seat formed within the body portion at a pointin spaced relation with the threaded extension, a movable valve member operating within the body portion, said valve member being cylindrical in formation and having a beveled inner end adapted to cooperate with the valve seat to out ofi'the passage of fluid through the body, and said valve member having openings formed in the wall thereof and arranged adjacent to its ends.

2. In a valve, a body portion formed with a threaded extension, said body portion having a valve seat formed intermediate its ends, said body portion being cut away to provide a fluid chamber, a valve memberadapted to move through the. body portion,

and having a valve formed at its inner end 141 testimony that I claim the foregoing as adapted to seat on the valve seat to restrict my own, I have hereto aifixed my signature 10 the pessage iof. fluid..throughithe bodyi ponin, the pnesence of two witnesses.

tion, andisaiidjvalve member; hzivin iiopeni 5 ings disposed in its wall adjacent to its GEORGE W KELLER ends, and. one end of said valve member Witnesses: adapted to extendbeyond thethreaded ex- ORVILLE J. PURDY; tension of the valve member. C. P. EMRIOH. 

